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Finding the Fourth Proportional to 68,709.84, 103,059.72 and 21,950.16

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Solution

The fourth proportional to 68,709.84, 103,059.72 and 21,950.16 is: 32,923.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,709.84 : 103,059.72 = 21,950.16 : x
  2. Step 2: Convert to fraction form
    68,709.84/103,059.72 = 21,950.16/x
  3. Step 3: Cross multiply
    68,709.84x = 103,059.72 × 21,950.16
  4. Step 4: Simplify right side
    68,709.84x = 2,262,177,343.56
  5. Step 5: Solve for x
    x = 2,262,177,343.56/68,709.84
  6. Step 6: Final answer
    x = 32,923.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.